Full Throttle Test: Did we Push a Pulse Jet Engine to its Limits?! 

I know that I can be wrong about nearly anything but only because it's happened so often in the past.. 🤪

Hell, me being wrong in some way is about the only thing I can really count on being true most of the time.

The most powerful thing in science isn't "Eureka!", it's "Huh... that's odd. I wonder why it does that?"

let's take it one step further- when you have a theory in your hand practice reversing it several times and only then allow your mind to look for ways to investigate- you see in this way there is only investigation -the only wrong is knowing the outcome -before you do the experiment ps everyone; be a scientist

You should do everything you can to disprove your hypothesis. If it's not falsifiable it's not science.

And not really starting small...

I been thinking, couldn't a Tesla valve possibly be used on one of these engines? Keeping the flow in one direction possibly inject fuel in the valve?

No. The problem with his valve is that even though it favors one direction of flow, the difference is relatively small. To achieve a significant difference, it requires a lot of stages, and this interferes with flow in the desired direction.

@@TechIngredientsCould one CAD that and run a fluid flow analysis?

bruce simpson from new zealand has been working on these and posting them on the internet since around 1999, google it if you want some nearly lost internet science

There is a universe close by where Tech Ingredients and Integza are neighbours 😂

And Styropyro lives across the street!

Or a turbo strapped to the exhaust nozzle!

I agree 👍 that would be awesome 😊

Oh

So far no Interpol.

no great story ever started with a glass of milk

An ER nurse shared that her patients too often are still reveling in a good time. Kudos for good judgement!!

​@@SupremeRuleroftheWorldEver play Legend of Zelda?

@@gaelonhays1712 i have no. i refuse to buy nintendo because of their shitty treatment of customers.

Eyebrows are a small sacrifice for a good story .

hey, i also have tried to drill through spent large calibre casings..hardened through its one time use??i never considered that,makes sense! thanks

Nice to see someone here older than me. Was 7 as I cleared to 50s. Reminds me of looking down the throats of dual quads when the engine backfired. My brother said, "You should see your hair man!🤣"

You’re lucky. I still have scars on my arm. 4th degree burns.

I call that a partial success!

I played around with expansion chambers for two strokes in my youth. I didn't find them efficient for road use. I think there is a very narrow bandwith in RPM and temperature at which they work and it's hard to keep to this in everyday road riding conditions. They are popular on small 2 stroke aero engines which usually operate in constant speed conditions.

@@nrml76 The whole theory around them isn´t trivial at all. If the baffle and the diffusor (the 2 cones of the chamber) have flatter (so, the 2 cones are longer), the bandwidth loses height, but gains extend. If you make them flatter, you have to make the belly(straight piece between the cones) smaller, cause the altogether-volume of the chamber has to be constant (depending on the cylinder´s cc). there´s a lot to that, sadly, and during youth one has time, but not experience or knowledge. if the cones have sharp angles, the bandwidth is high, but short too. if the cones are sharp, but the exhaust-pot´s upper edge is rounded, it counters the effect of the sharp cones, and nullifies the chamber´s effect somewhat, giving you a short AND low bandwidth. if you make the port´s upper edge straight, and the cones shap, you get the shortest bandwidth, but the highest one, aka highest performance. If you make such a sharp chamber´s pipe gliding on the exhaust pipe (2-piece-pipe, gliging in each other by a strong servo, automatically matching load and rpm), u get a the sharpest combination (aka highest performance), but can match it then to every rpm/load-situation, stretching the bandwidth 3-4 times (to a few 1000rpm). But it´s very few people doing that (the pipe from the port to the chamber is a 2-piece pipe, gliding in each other, so the exhaust can be short or longer, depending on engine load/rpm). Normally done solely in previous Eastern Germany (2stroke-tradition cause of the decades-long trade-embargos of the West, that made 4strokes unreachable) and Holland (racing-tradition on 2strokes). Look for "Variable length two stroke exhaust with servo", you´ll find 2 video´s in YT, and there´s a few more...

Yup, Rocket Man.

British RU-vidr Colin Furze did something insane with a valveless pulse jet . I won't spoil the video but it's worth a watch .

@@TechIngredients I was super impressed at how reliably it started, but underwhelmed at only 30 pounds of thrust. Can't wait for the augmenter. There was discussion of using an augmenter on canard aircraft piston exhaust to increase cooling suck from the cowling.

rocket man, burning up his propane out there alone.

​@@balaclavabob001Excellent video! He also made a turbojet in his shed that was hilarious when he fired it up.

There's an optimum for power output, an optimum for power-to-weight ratio, an optimum for fuel efficiency, an optimum for cost... Since pulse jets are usually used where cost optimization and ease of production are more important than power or efficiency, I'd argue that a cylinder *is* optimal. Rockets are better for power but inefficient, turbojets are better for efficiency but expensive, etc.

Surely the cylinder is most practical, unless you want to compensate for differences in soundspeed in the variously heated portions of the chamber. This is like making a transmissionline, as in acoustics. Tuned to a frequency by the length of the tube. Like a flute even.

Well it wasnt illegal the last 6 times you called so please stop.

@@thetruthexperiment "Noise complaint? ... Noise complaint..."

And answer the questions, eventually :)

Just wait...

If my calculations are correct, when this baby hits 88 miles per hour, you're gonna see some serious shit.

Would your vehicle remain "Street Legal" at that point? But the real question would be could the police catch you to tell you it wasn't legal anymore? LOL.

If you can build a muffler for a pulse jet that doesn’t kill the power output, you’d really have something fun to drive around town! No more tailgaters either. Or at least not repeat offenders!

@@robertedwards7749 they might keep a fair distance to you, with lights and sirens on, the sirens you wont hear though. having a glowing red pulsejet engine on your back speweing flames .... yeah 50m minimum

Thanks!

Thanks! We will.

You mean *the ingredients*? Eh? Eh?

@@joelandersson3474 hehehe yes hehehe

We'll see...